I'm personally not a fan of Chrome - I still remember that initial EULA - despite its speed, while Microsoft has to battle years and years of negative mindshare about Internet Explorer. As the "big evil" (although I would say that Facebook and Google have overtaken MSFT in the era of privacy-erosion and data mining) they have a lot of negative mindshare to overcome.

A recent Firefox bug nearly made me abandon it in favour of something else, but it's the addons that stop me from doing so. However, the depth and breadth of addons for Firefox means that no other browser can compete, for my usage.